WAV Files Help

Hi guys, i modded a car sounds using Fruity Loop and Audacity to set it Only Mono at 16 bit. But, when i try to enter in a car that use the custom sounds, the game crash. Someone can help me? How you create yours custom sounds ? Open IV works great, and other downloaded sounds work.

Size is of the same original. 77.5 Kb. Also bit rate is same: 48,000. Really i dont know what happened. It could be the length of the track in seconds? I'm pissed off. I tryed tons of modded files and all worked. Only my fucking wav crash the game